HTML, CSS, and JavaScript courses can help you learn web page structure, styling, and interactivity, along with responsive design and accessibility practices. You can build skills in creating layouts, implementing animations, and optimizing user experiences across different devices. Many courses introduce tools like code editors, version control systems, and browser developer tools, that support testing and refining your projects. By mastering these skills and tools, you’ll be well-equipped to develop engaging websites and applications.

Columbia University
Skills you'll gain: Image Analysis, Computer Vision, Computer Graphics, Algorithms, Linear Algebra, Machine Learning Algorithms
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Sprint Retrospectives, User Story, Jira (Software), Performance Metric, Sprint Planning, Release Management, Product Roadmaps, Performance Analysis, Root Cause Analysis, Project Planning, Agile Methodology, Agile Project Management, Team Performance Management, Backlogs, Continuous Improvement Process, Operational Analysis, Collaborative Software, Data-Driven Decision-Making, Prioritization, Descriptive Analytics
Beginner · Course · 1 - 4 Weeks

ESSEC Business School
Skills you'll gain: Mediation, Negotiation, Communication Strategies, Conflict Management, Active Listening, Cultural Sensitivity, Intercultural Competence, Cultural Diversity, Verbal Communication Skills, Communication, Diplomacy, Relationship Building, Labor Relations, Interpersonal Communications, Strategic Partnership, Case Studies, Non-Verbal Communication, Leadership, Analysis, Planning
Beginner · Specialization · 3 - 6 Months

Duke University
Skills you'll gain: Child Development, Advocacy, Research, Research Methodologies, Social Sciences, Data Collection, Social Network Analysis, Anthropology, Human Development, Nutrition and Diet, Environmental Issue, Biology
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Integrated Development Environments, Computer Architecture, Hardware Architecture, Software Development, Embedded Systems, Debugging, Verification And Validation, System Design and Implementation, Simulations, System Configuration
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Supplier Management, Project Schedules, Project Closure, Milestones (Project Management), Scheduling, Engineering Management, Procurement, Quality Management, Project Planning, Risk Management, Risk Analysis, Budget Management, Cost Estimation, Risk Mitigation, Project Management, Quality Assurance, Timelines, Quality Control
Build toward a degree
Beginner · Course · 1 - 4 Weeks
University of Michigan
Skills you'll gain: Application Deployment, Django (Web Framework), Application Development, Web Development, Web Applications, Object-Relational Mapping, Database Design, Data Modeling, Authentications, User Accounts, Data Persistence, Python Programming, Data Validation
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Business Writing, Presentations, Peer Review, Graphic and Visual Design, Graphic Design, Business Correspondence, Public Speaking, Graphic and Visual Design Software, Business Communication, Visual Design, Verbal Communication Skills, Design, Storytelling, Writing, Layout Design, Organizational Skills, Project Design, Concision, Writing and Editing, Proofreading
Beginner · Specialization · 3 - 6 Months

Microsoft
Skills you'll gain: Penetration Testing, Security Testing, System Testing, Vulnerability Scanning, Vulnerability Management, Cloud Security, Cybersecurity, Vulnerability Assessments, Intrusion Detection and Prevention, Network Security, Exploitation techniques, Microsoft Azure, Firewall, Virtual Private Networks (VPN)
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Maintainability, Code Review, Test Driven Development (TDD), API Testing, LLM Application, API Design, Microsoft Visual Studio, Software Engineering, Engineering Software, Software Technical Review, Program Development, Application Lifecycle Management, Unit Testing, Microservices, Peer Review, Quality Assessment
Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Role-Based Access Control (RBAC), Authentications, Secure Coding, ASP.NET, Microsoft Copilot, Data Security, Back-End Web Development, Authorization (Computing), JSON, Identity and Access Management, Data Storage, Application Programming Interface (API), Encryption
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Threat Modeling, Application Security, Secure Coding, Open Web Application Security Project (OWASP), Security Engineering, Security Requirements Analysis, Security Controls, Data Security, Vulnerability Management, Computer Security, Vulnerability, Vulnerability Assessments, Databases, Information Privacy, Role-Based Access Control (RBAC), Computer Programming, Python Programming, Node.JS, JavaScript Frameworks, Javascript
Mixed · Course · 1 - 4 Weeks